Gas furnace



Jan. 24, 192s. E. A. JONES 1,657,125

GAS FURNACE Filed Aug. 24.7 1927 2 Sheets-Sheet 1 l N V EN TOR. Eow/N.Jo/ys Jan. 24, 1928. E. A. JONES GAS FURNAGE Filed Aug. 24q 1927 2Sheets-Sheet 2.

INVENTOR.

A TTORNEYS.

Patented Jan. 2 4, 1928A.

UNITED STATES PATENT OFFICE.

EDWIN A. JONES, OE MILWAUKEE, WISCONSIN, A ssIeNoR To I.. I. MUELLEREURNACE COMPANY, OE MILWAUKEE, WISCONSIN, A CORPORATION OE WISCONSIN.

GAS EUENAOE.

Application led August 24, 1927. Serial No. 215,124. RED

This invention relates to improvements in gas furnaces.

It is one of the objects of the present invention to provide a gasfurnace in which the .flue passages are arranged with removable baiiieswhich cause the gases to scrub all of the flue surfaces to produce amaximum extraction of heat, the baffles also greatly reducing thevolumetric content of the flues, thereby decreasing the violence ofexplosions which might occur Within the furnace should collected gasesbecome ignited.

A further obj ect of the invention is to provide a ga's furnace in whichthe iue passages are readily accessible from the front of the furnacefor cleaning.

A further object of the invention is to provide a gas furnaceconstructed so as to have a long iue travel of a small volumetriccontent, and arranged so that the furnace may be built in half sections,the outer circumferences of Which may be accurately ground to facilitatea gas tight assembly when said sections are bolted together.

A further Object of the invention is to provide a gas furnace having aremovable front flue passage baille to prevent the products ofcombustion from short circuiting through the front cleaning extension.

A further` Object of the invention is to` provide a gas furnace which isof very' simple construction, is efficient in Operation, is strong anddurable and is `well adapted for` the purposes described.

With the above and other objects in view, the invention consists of theimproved gas furnace, and its parts and combinations, as set forth inthe claims and all equivalents thereof.

In the accompanying drawingsin which the same reference charactersindicate the same parts in all of the views:

Fig. 1 is a perspective view of a three unit gas furnace constructed inaccordance with the invention, parts being broken away to show detailsof construction;

Fig. 2 is an enlarged vertical sectional view through a unit indicatedon line 2-2 of Fig. 3;

Fig. 3 is an enlarged cross sectional view .an upper vent pipeconnection 15.

of a unit indicated o n line 3-.3 of Fig. 2;

Fig. 4 is a detail view of a furnace unit half section; and i Fig. 5 isa detail perspective view of one of the flue passage baffles used.

Referring now more particularly to the drawings, it will appear that thegas furnace is designated generally by the numeral 8 and may be composedof any number of independent units 9 enclosed by a suitable casing 10,the furnace shown in Fig. 1 being composed of three units.

Each unit 9. is formed of a pair of complementary side Wall members orsections 11, one of which is shown in detail in Fig. l. The upperportions of said members 11 are provided with alternating rows ofconcaved and convex portions 12 and 13, respectively, and the eXteriorsof saidV members are formed With iins or ribs V14C, so that a largeAsurface will be afforded for the heating of air by convection. Due tothe construction of the unit side sections 11 the adjacent surfaces ofeach pair may be accurately ground and when they are assembled andbolted t0- gether, as shown in Figs. 2 and 3, a gas tight connection isformed, the space between said sections providing -a flue. The rear endsof the flues are closed, except rlflor 1e front portion of each unit hasan upper' opening 17 and a lower opening 18 extending through the frame16. The lower open# ing 18 is'controlled by suitable removable' platesto permit access to a burner 19 Within the lower portion of the unit 9,while the `upper opening 17 is normally closed b v a door 20Acontrolling access to an upper forward iiue cleaning extension 21.Within the flue cleaning extension and against the front. ends of thesections 11 a removable front baiile 22 is positioned, said baffle beingshown in the center unit of Fig. l, and also in Fig. 3. The purpose ofthe baflie 22 is to prevent the products of combustion from shortcircuiting through the front cleaning extension 21 from the flue and theremovability of the baiile permits ready accessibility to the Hue forcleaning. i

By reference to Fig. 2, it will be seen that when the two sections l1 ofa unit are conzontally extending internal Hue baffles 23 are provided.One of said baffles 23 is shown in detail in Fig. 5, and it will be seento be triangular in cross section and is formed along one edge withprojecting lugs 23. Said bailies mayl be either cast as solid memlbers,or as shells, and in practice it has been found desirable to form thesame as shells, and Hll the interiors with asbestos or the like. It willbe noted that the baHies 23 are not integral with the unit sections l1,but are inserted in the Hue opening between op osed concave and convexportions of the wa ls and are removably held in position by theengagement of the lugs 23 with the fins 14, and also by lugs 24. cast onthe inner surfaces of the sections ll which engage the, op osite' sidesof the baffles.

t will, therefore, be seen that the improved gas furnace is composed of.any number of units, and each unit a serentine like Hue is providedabove the urners. Due to the baiiles 23, the space between the Hue wallsis greatly restricted,

with the result that the gases will scrub the unit surfaces, insurin amaximum extraction of heat.` The ba es also reatly reduce the volumetriccontent of the ues and thereby decrease the violence of explosions whichmight occur within the Huesfrom the collection and `i ition of unburnedgases. Each unit has a ong Hue travel and because of theJ fact that thebaHles are not integral with the unit sections, the units may be builtin half sections and so formed that the entire outer surfaces may beaccurately ground, whereby the sections may be bolted together aroundtheir outer circumferences and lform a gas tight Ht. Also, theaccessibility of the Hues from the furnace front for cleaning is ofgreat advantage. The gas furnace is furthermore of simple and novelconstruction, and is well adapted for the purposes described.

What I claim as my invention is:

l. A gas furnace, comprising a unit formed with a Hue opening, andanindependent, removable baille member mountel within said Hue opening.

2. A gas furnace, comprising a heating unit composed of a pair ofsecured together sections, a curved Hue opening being formedtherebetween, and a plurality of independent baHiemembers positionedbetween said sections and restricting said Hue opening.

3. A gas furnace, comprising a heating unit formed of a pair of securedtogether sections, a serpentine like vertically extending Hue openingbeing formed therebetween, a burner positioned in the lower portion ofsaid unit and in register with the Hue opening, and a plurality ofindependent, remov able baHle members positioned between Said sectionsand restricting the volumetric content of said Hue opening.

4. A gas furnace, comprising a heatlng unit formed of a pair of boltedtogether sections, a serpentine like vertically extendlng Hue openingbeing formed therebetween, a

vburner posltioned in the -lower portion of said unit and in registerwith the Hue opening, and a plurallty of spaced,independent,'horizontally extending removable baille members positionedin staggered relatlon between said sections and restricting thevolumetric content of said Hue opening.

5. A gas furnace, comprising a heating unit formed of a pair of securedtogether sections, a curved Hue opening being formed therebetween, saidheating unit having a cleaning opening in its front portion affordingaccess to said Hue opening, a door for said4 cleaning opening, l'and aplurality o f .removable battle members between said unit sections andrestricting the Hue opening.

6. A gas furnace, comprising a heating unit formed of a pair of securedtogether sections, a curved Hue opening being formed therebetween, afront cleaning extension formed on said unit registering with said Hueopening and having a forward opening therein, a door for said forwardopening, and a plurality of removable baffle members between said unitsections and restricting the Hue opening.

A gas furnace, comprising a heating unit formed of a pair of ribbedsections secured together, acurved Hue opening being formedtherebetween, a front cleamng extension projecting from said Hue openingand having a cleaning opening therein, a removable baHle member withinsaid extension and engaging said section ribs, and a plurality of spacedremovable baille members between said unit sections and restricting theHue opening.

8. A gas furnace, comprising a heating unit formed of a pair of boltedtogether, ribbed sections, a serpentine like vertically extending Hueopening being formed therebetween, a front cleaning extension formed insaid unit and registering with said Hue opening, said extension havingan opening, a door for said opening, a removable baHie member withinsaid extension adjacent said section ribs, a burner within the lowerportion of said unit and in register with the Hue opening, and aplurality of spaced, independent, horizontally extending, removable,-triangular baille members positioned in staggered relation between saidsections and restricting the volumetric content of said Hue opening.

9. A gas furnace, comprising a heating unit formed of a pair of boltedtogether,

lll() ribbed sections, a serpentine like vertically plurality ofindependent and spaced baie extending 4iue opening being formedtheremembers within said flue opemng and rebetween, a front cleaningextension formed stricting the same. in said unit and registering withsaid flue In testimony whereof, I affix my signa- 5 opening, and a doorfor sald opening. ture. i

10. A gas furnace, comprising a. heating unit having a curved fineopening, and a EDWIN A. JONES.

